#343DB8#343DB8

#343DB8 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.8% C 0.190 H 272.3°. Best body text is #FFFFFF at 8.38:1 contrast (WCAG AA passes).

Color values

HEX	#343DB8
RGB	rgb(52, 61, 184)
HSL	hsl(236, 56%, 46%)
HSV	hsv(236, 72%, 72%)
CMYK	cmyk(71.7%, 66.8%, 0%, 27.8%)
CIE-LAB	lab(32.98, 37.85, -65.81)
CIE-LCH	lch(32.98, 75.92, 299.90°)
OKLab	oklab(43.77% 0.0077 -0.1902)
OKLCH	oklch(43.77% 0.19 272.3)
XYZ	xyz(11.7337, 7.5271, 46.1726)
Luminance	0.0753 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343DB8 #B8AF34

analogous

#347FB8 #343DB8 #6D34B8

triadic

#343DB8 #B8343D #3DB834

tetradic

#343DB8 #B8347F #B8AF34 #34B86D

square

#343DB8 #B8347F #B8AF34 #34B86D

split-complementary

#343DB8 #B86D34 #7FB834

monochromatic

#191D59 #272D88 #343DB8 #5961D0 #898FDE

Accessibility & contrast

On white

8.38

#343DB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#343DB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343DB8

8.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343DB8	#FFFFFF	#000000	##FFFFFF
##343DB8	1.00	8.38	2.51	8.38
#FFFFFF	8.38	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BC

Deuteranopia (green-blind)

#0047B6

Tritanopia (blue-blind)

#005E75

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #343db8;
/* rgb */ color: rgb(52, 61, 184);
/* oklch */ color: oklch(43.8% 0.190 272.3);

Tailwind

colors: {
  custom: {
    50: '#7e73ce',
    500: '#343db8',
    950: '#000000',
  },
}

SCSS

$custom: #343db8;
$custom-light: #7e73ce;
$custom-dark: #000000;

JSON

{
  "hex": "#343db8",
  "rgb": {
    "r": 52,
    "g": 61,
    "b": 184
  },
  "hsl": {
    "h": 235.909,
    "s": 55.932,
    "l": 46.275
  },
  "oklch": {
    "l": 0.43767,
    "c": 0.19039,
    "h": 272.3
  },
  "luminance": 0.07528
}

Semantic roles & 50–950 ramp

primary

#343DB8

secondary

#C8C380

accent

#D549DF

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #343DB8

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →